Question

java中读取多个文本文件内容到一个文本文件

Answer 1

直接在main函数中写了：
(经测试，已经实现)

public static void main(String[] args) {
//自己修改文件存放路径
String filepath = "e:/test.txt";
String temp = null;
Object a[][] = null;
BufferedReader br = null;
StringTokenizer st = null;
int i = 0;
try {
br = new BufferedReader(new FileReader(filepath));
while (br.ready()) {
temp = br.readLine();
if (temp != null && temp != "") {
//个人感觉方法split不怎么好用，还是用以下方法比较好
st = new StringTokenizer(temp, "--");
a[i][0] = st.nextToken().trim();
a[i][1] = st.nextToken().trim();
a[i][2] = st.nextToken().trim();
}
i++;
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
br.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}

要查看结果的话遍历一下数组a[][]就可以了

如果对您有帮助，请记得采纳为满意答案，谢谢！祝您生活愉快！

vaela

Answer 2

JDK7后可以这样

多个文本文件放到一个List<Path>容器里：

List<Path> sources = ...;
Path target = Paths.get(...);

for(Path f: sources){
    Files.write(target, 
                Files.readAllLines(f, Charset.defaultCharset()),
                Charset.defaultCharset(),
                StandardOpenOption.APPEND);
}

Answer 3

正好写过一个，给你参考，这是1个文件复制到另一个的，依样画葫芦吧

BufferedReader br = new BufferedReader(new FileReader(new File("C:/aaa.txt")));
BufferedWriter bw = new BufferedWriter(new FileWriter(new File("C:/bbb.txt")));
while ((line = br.readLine()) != null) {
bw.write(line);
bw.newLine();
}
bw.close();
br.close();
System.out.println("复制成功");